It seems that 25% paragraph on wikipedia cites a non-technical article[1] from 2018: "Theoretical calculations have shown that detonation combustion is 25%

It seems that 25% paragraph on wikipedia cites a non-technical article[1] from 2018: "Theoretical calculations have shown that detonation combustion is 25% more efficient than the isobaric combustion cycle, which corresponds to constant-pressure combustion, which is implemented in the chambers of of modern liquid propulsion engines." From another article[2] of the same year: "Conservatively speaking, a rotating detonation combustor, or RDC, should reduce specific fuel consumption by about 5% compared to a conventional engine. This measure of fuel efficiency is calculated by dividing fuel consumption by power output. A rotating detonation engine generates more power, which drives down specific fuel consumption. A reduction on the order of 5 percent would be a breakthrough, given that designers of conventional engines “try to eke out fractions of a percent,” says Scott Claflin, director of advanced concepts at the Rocket Shop, Aerojet Rocketdyne’s innovation organization." [1] https://rg.ru/2018/01/18/levochkin-vozmozhnost-sozdaniia-detonacionnogo-dvigatelia-podtverdilas.html https://rg.ru/2018/01/18/levochkin-vozmozhnost-sozdaniia-det... [2] https://aerospaceamerica.aiaa.org/departments/increasing-engine-efficiency/ https://aerospaceamerica.aiaa.org/departments/increasing-eng...